Which of the following is an example of a mixture that maintains the physical properties of its substances?

• Salt dissolved in water

• Iron filings mixed with sand

• Sugar dissolved in tea

• Vinegar mixed with water

Tags

TEKS.SCI.5.6B

Which of the following mixtures can be separated by using a magnet?

• Sand and water

• Iron filings and sand

• Salt and water

• Sugar and tea

Tags

TEKS.SCI.5.6B

Describe the transformation of energy in a flashlight when it is turned on.

• Light energy to chemical energy to electrical energy

• Chemical energy to light energy to electrical energy

• Chemical energy to electrical energy to light energy

• Electrical energy to chemical energy to light energy

Tags

TEKS.SCI.5.8A

Explain how the Sun affects weather patterns through the water cycle.

• The Sun causes the ocean to freeze, leading to snow

• The Sun causes evaporation, leading to cloud formation and precipitation

• The Sun causes condensation, leading to clear skies

• The Sun causes precipitation, leading to drought

Tags

TEKS.SCI.5.10A

Predict what might happen to the flow of energy in a food web if a primary producer is removed.

• The energy flow will increase

• The energy flow will decrease

• The energy flow will remain the same

• The energy flow will reverse

Tags

TEKS.SCI.5.12B

Which of the following is a characteristic of a mixture?

• It has a fixed composition

• It can be separated by physical means

• It is a pure substance

• It cannot be separated

Tags

TEKS.SCI.5.6B

What type of energy transformation occurs when a battery powers a light bulb?

• Electrical to chemical to light

• Chemical to electrical to light

• Light to chemical to electrical

• Chemical to light to electrical

Tags

TEKS.SCI.5.8A

How does the interaction between the Sun and the ocean contribute to the water cycle?

• The Sun causes the ocean to condense, forming clouds

• The Sun causes the ocean to evaporate, forming clouds

• The Sun causes the ocean to freeze, forming ice

• The Sun causes the ocean to precipitate, forming rain

Tags

TEKS.SCI.5.10A

What is the impact on a food web if a top predator is removed?

• The prey population will decrease

• The prey population will increase

• The ecosystem will remain balanced

• The number of producers will decrease

Tags

TEKS.SCI.5.12B

Which mixture can be separated by filtration?

• Salt and water

• Sand and water

• Sugar and tea

• Iron filings and sand

Tags

TEKS.SCI.5.6B